busted xbox gamepass

[Kyle Nuva]

i bought this on the app on my computer and for whatever reason, i can only play halo 2
the others require dlc.............................. NOW WAIT A MIN
its the full collection and each each game is also a full stand alone game
so wtf, i tried to access the store and all i get is an error.. wow
thanks gamepass. you suck

[Aspen]

You are only able to play the game via Xbox Game Pass when you are using the Xbox App on PC, not Steam

[delta]

Do you need an Xbox Live account if you're only playing single-player?